Home / 28,587,421.60-42,876,985.20-8,390,557.60

Finding the Fourth Proportional to 28,587,421.60, 42,876,985.20 and 8,390,557.60

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Solution

The fourth proportional to 28,587,421.60, 42,876,985.20 and 8,390,557.60 is: 12,584,619.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,587,421.60 : 42,876,985.20 = 8,390,557.60 : x
  2. Step 2: Convert to fraction form
    28,587,421.60/42,876,985.20 = 8,390,557.60/x
  3. Step 3: Cross multiply
    28,587,421.60x = 42,876,985.20 × 8,390,557.60
  4. Step 4: Simplify right side
    28,587,421.60x = 359,761,814,034,947.50
  5. Step 5: Solve for x
    x = 359,761,814,034,947.50/28,587,421.60
  6. Step 6: Final answer
    x = 12,584,619.18

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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.