Home / 839,721,019.04-1,159,045,520.08-487,410,511.92

Finding the Fourth Proportional to 839,721,019.04, 1,159,045,520.08 and 487,410,511.92

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Solution

The fourth proportional to 839,721,019.04, 1,159,045,520.08 and 487,410,511.92 is: 672,760,306.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,721,019.04 : 1,159,045,520.08 = 487,410,511.92 : x
  2. Step 2: Convert to fraction form
    839,721,019.04/1,159,045,520.08 = 487,410,511.92/x
  3. Step 3: Cross multiply
    839,721,019.04x = 1,159,045,520.08 × 487,410,511.92
  4. Step 4: Simplify right side
    839,721,019.04x = 564,930,970,280,775,424
  5. Step 5: Solve for x
    x = 564,930,970,280,775,424/839,721,019.04
  6. Step 6: Final answer
    x = 672,760,306.66

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Double scale
Find fourth proportional to 839,721,020.04, 1,159,045,521.46 and 487,410,512.92
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.