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Finding the Fourth Proportional to 508,935.40, 763,403.10 and 470,444.20

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Solution

The fourth proportional to 508,935.40, 763,403.10 and 470,444.20 is: 705,666.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,935.40 : 763,403.10 = 470,444.20 : x
  2. Step 2: Convert to fraction form
    508,935.40/763,403.10 = 470,444.20/x
  3. Step 3: Cross multiply
    508,935.40x = 763,403.10 × 470,444.20
  4. Step 4: Simplify right side
    508,935.40x = 359,138,560,657.02
  5. Step 5: Solve for x
    x = 359,138,560,657.02/508,935.40
  6. Step 6: Final answer
    x = 705,666.30

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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.