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Finding the Fourth Proportional to 658,013.94, 987,020.80 and 358,746.19

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Solution

The fourth proportional to 658,013.94, 987,020.80 and 358,746.19 is: 538,119.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,013.94 : 987,020.80 = 358,746.19 : x
  2. Step 2: Convert to fraction form
    658,013.94/987,020.80 = 358,746.19/x
  3. Step 3: Cross multiply
    658,013.94x = 987,020.80 × 358,746.19
  4. Step 4: Simplify right side
    658,013.94x = 354,089,948,086.34
  5. Step 5: Solve for x
    x = 354,089,948,086.34/658,013.94
  6. Step 6: Final answer
    x = 538,119.22

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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.