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Finding the Fourth Proportional to 521,721.20, 732,509.20 and 521,721.20

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Solution

The fourth proportional to 521,721.20, 732,509.20 and 521,721.20 is: 732,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,721.20 : 732,509.20 = 521,721.20 : x
  2. Step 2: Convert to fraction form
    521,721.20/732,509.20 = 521,721.20/x
  3. Step 3: Cross multiply
    521,721.20x = 732,509.20 × 521,721.20
  4. Step 4: Simplify right side
    521,721.20x = 382,165,578,835.04
  5. Step 5: Solve for x
    x = 382,165,578,835.04/521,721.20
  6. Step 6: Final answer
    x = 732,509.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.