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Finding the Fourth Proportional to 478,681.65, 660,572.10 and 260,892.28

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Solution

The fourth proportional to 478,681.65, 660,572.10 and 260,892.28 is: 360,026.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,681.65 : 660,572.10 = 260,892.28 : x
  2. Step 2: Convert to fraction form
    478,681.65/660,572.10 = 260,892.28/x
  3. Step 3: Cross multiply
    478,681.65x = 660,572.10 × 260,892.28
  4. Step 4: Simplify right side
    478,681.65x = 172,338,161,273.39
  5. Step 5: Solve for x
    x = 172,338,161,273.39/478,681.65
  6. Step 6: Final answer
    x = 360,026.67

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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.