Home / 987,208.47-1,480,812.71-239,254.47

Finding the Fourth Proportional to 987,208.47, 1,480,812.71 and 239,254.47

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Solution

The fourth proportional to 987,208.47, 1,480,812.71 and 239,254.47 is: 358,881.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,208.47 : 1,480,812.71 = 239,254.47 : x
  2. Step 2: Convert to fraction form
    987,208.47/1,480,812.71 = 239,254.47/x
  3. Step 3: Cross multiply
    987,208.47x = 1,480,812.71 × 239,254.47
  4. Step 4: Simplify right side
    987,208.47x = 354,291,058,904.04
  5. Step 5: Solve for x
    x = 354,291,058,904.04/987,208.47
  6. Step 6: Final answer
    x = 358,881.71

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Double scale
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Similar ratio
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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.