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Finding the Fourth Proportional to 590,387.20, 885,710.40 and 291,011.20

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Solution

The fourth proportional to 590,387.20, 885,710.40 and 291,011.20 is: 436,580.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,387.20 : 885,710.40 = 291,011.20 : x
  2. Step 2: Convert to fraction form
    590,387.20/885,710.40 = 291,011.20/x
  3. Step 3: Cross multiply
    590,387.20x = 885,710.40 × 291,011.20
  4. Step 4: Simplify right side
    590,387.20x = 257,751,646,356.48
  5. Step 5: Solve for x
    x = 257,751,646,356.48/590,387.20
  6. Step 6: Final answer
    x = 436,580.68

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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.