Home / 1,009,987.40-1,514,981.10-478,546.40

Finding the Fourth Proportional to 1,009,987.40, 1,514,981.10 and 478,546.40

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Solution

The fourth proportional to 1,009,987.40, 1,514,981.10 and 478,546.40 is: 717,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009,987.40 : 1,514,981.10 = 478,546.40 : x
  2. Step 2: Convert to fraction form
    1,009,987.40/1,514,981.10 = 478,546.40/x
  3. Step 3: Cross multiply
    1,009,987.40x = 1,514,981.10 × 478,546.40
  4. Step 4: Simplify right side
    1,009,987.40x = 724,988,751,473.04
  5. Step 5: Solve for x
    x = 724,988,751,473.04/1,009,987.40
  6. Step 6: Final answer
    x = 717,819.60

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Double scale
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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.