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Finding the Fourth Proportional to 802,486.40, 1,107,549.12 and 462,888.32

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Solution

The fourth proportional to 802,486.40, 1,107,549.12 and 462,888.32 is: 638,853.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,486.40 : 1,107,549.12 = 462,888.32 : x
  2. Step 2: Convert to fraction form
    802,486.40/1,107,549.12 = 462,888.32/x
  3. Step 3: Cross multiply
    802,486.40x = 1,107,549.12 × 462,888.32
  4. Step 4: Simplify right side
    802,486.40x = 512,671,551,474.28
  5. Step 5: Solve for x
    x = 512,671,551,474.28/802,486.40
  6. Step 6: Final answer
    x = 638,853.88

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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.