Home / 472,721.40-652,501.08-291,490.20

Finding the Fourth Proportional to 472,721.40, 652,501.08 and 291,490.20

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Solution

The fourth proportional to 472,721.40, 652,501.08 and 291,490.20 is: 402,346.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,721.40 : 652,501.08 = 291,490.20 : x
  2. Step 2: Convert to fraction form
    472,721.40/652,501.08 = 291,490.20/x
  3. Step 3: Cross multiply
    472,721.40x = 652,501.08 × 291,490.20
  4. Step 4: Simplify right side
    472,721.40x = 190,197,670,309.42
  5. Step 5: Solve for x
    x = 190,197,670,309.42/472,721.40
  6. Step 6: Final answer
    x = 402,346.22

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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.