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Finding the Fourth Proportional to 710,141.84, 979,980.55 and 387,853.24

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Solution

The fourth proportional to 710,141.84, 979,980.55 and 387,853.24 is: 535,229.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,141.84 : 979,980.55 = 387,853.24 : x
  2. Step 2: Convert to fraction form
    710,141.84/979,980.55 = 387,853.24/x
  3. Step 3: Cross multiply
    710,141.84x = 979,980.55 × 387,853.24
  4. Step 4: Simplify right side
    710,141.84x = 380,088,631,454.48
  5. Step 5: Solve for x
    x = 380,088,631,454.48/710,141.84
  6. Step 6: Final answer
    x = 535,229.18

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Double scale
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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.