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Finding the Fourth Proportional to 839,472.90, 1,158,513.67 and 472,065.67

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Solution

The fourth proportional to 839,472.90, 1,158,513.67 and 472,065.67 is: 651,473.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,472.90 : 1,158,513.67 = 472,065.67 : x
  2. Step 2: Convert to fraction form
    839,472.90/1,158,513.67 = 472,065.67/x
  3. Step 3: Cross multiply
    839,472.90x = 1,158,513.67 × 472,065.67
  4. Step 4: Simplify right side
    839,472.90x = 546,894,533,870.93
  5. Step 5: Solve for x
    x = 546,894,533,870.93/839,472.90
  6. Step 6: Final answer
    x = 651,473.72

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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.