Home / 687,803.40-1,031,705.10-501,179.40

Finding the Fourth Proportional to 687,803.40, 1,031,705.10 and 501,179.40

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Solution

The fourth proportional to 687,803.40, 1,031,705.10 and 501,179.40 is: 751,769.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,803.40 : 1,031,705.10 = 501,179.40 : x
  2. Step 2: Convert to fraction form
    687,803.40/1,031,705.10 = 501,179.40/x
  3. Step 3: Cross multiply
    687,803.40x = 1,031,705.10 × 501,179.40
  4. Step 4: Simplify right side
    687,803.40x = 517,069,342,994.94
  5. Step 5: Solve for x
    x = 517,069,342,994.94/687,803.40
  6. Step 6: Final answer
    x = 751,769.10

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.