Home / 738,705.52-1,018,783.08-509,628.20

Finding the Fourth Proportional to 738,705.52, 1,018,783.08 and 509,628.20

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Solution

The fourth proportional to 738,705.52, 1,018,783.08 and 509,628.20 is: 702,851.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,705.52 : 1,018,783.08 = 509,628.20 : x
  2. Step 2: Convert to fraction form
    738,705.52/1,018,783.08 = 509,628.20/x
  3. Step 3: Cross multiply
    738,705.52x = 1,018,783.08 × 509,628.20
  4. Step 4: Simplify right side
    738,705.52x = 519,200,587,250.86
  5. Step 5: Solve for x
    x = 519,200,587,250.86/738,705.52
  6. Step 6: Final answer
    x = 702,851.91

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Double scale
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Similar ratio
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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.