Home / 876,840.76-1,210,042.02-489,654.28

Finding the Fourth Proportional to 876,840.76, 1,210,042.02 and 489,654.28

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Solution

The fourth proportional to 876,840.76, 1,210,042.02 and 489,654.28 is: 675,723.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,840.76 : 1,210,042.02 = 489,654.28 : x
  2. Step 2: Convert to fraction form
    876,840.76/1,210,042.02 = 489,654.28/x
  3. Step 3: Cross multiply
    876,840.76x = 1,210,042.02 × 489,654.28
  4. Step 4: Simplify right side
    876,840.76x = 592,502,254,072.85
  5. Step 5: Solve for x
    x = 592,502,254,072.85/876,840.76
  6. Step 6: Final answer
    x = 675,723.90

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Double scale
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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.