Home / 991,680.60-1,488,903.30-618,432.60

Finding the Fourth Proportional to 991,680.60, 1,488,903.30 and 618,432.60

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Solution

The fourth proportional to 991,680.60, 1,488,903.30 and 618,432.60 is: 928,510.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,680.60 : 1,488,903.30 = 618,432.60 : x
  2. Step 2: Convert to fraction form
    991,680.60/1,488,903.30 = 618,432.60/x
  3. Step 3: Cross multiply
    991,680.60x = 1,488,903.30 × 618,432.60
  4. Step 4: Simplify right side
    991,680.60x = 920,786,338,967.58
  5. Step 5: Solve for x
    x = 920,786,338,967.58/991,680.60
  6. Step 6: Final answer
    x = 928,510.99

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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.