Home / 990,239.67-1,485,120.56-457,248.33

Finding the Fourth Proportional to 990,239.67, 1,485,120.56 and 457,248.33

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Solution

The fourth proportional to 990,239.67, 1,485,120.56 and 457,248.33 is: 685,762.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,239.67 : 1,485,120.56 = 457,248.33 : x
  2. Step 2: Convert to fraction form
    990,239.67/1,485,120.56 = 457,248.33/x
  3. Step 3: Cross multiply
    990,239.67x = 1,485,120.56 × 457,248.33
  4. Step 4: Simplify right side
    990,239.67x = 679,068,893,622.42
  5. Step 5: Solve for x
    x = 679,068,893,622.42/990,239.67
  6. Step 6: Final answer
    x = 685,762.16

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Double scale
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1.5x scale

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.