Home / 9,779,677.76-13,495,280.20-5,428,421.55

Finding the Fourth Proportional to 9,779,677.76, 13,495,280.20 and 5,428,421.55

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Solution

The fourth proportional to 9,779,677.76, 13,495,280.20 and 5,428,421.55 is: 7,490,847.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,779,677.76 : 13,495,280.20 = 5,428,421.55 : x
  2. Step 2: Convert to fraction form
    9,779,677.76/13,495,280.20 = 5,428,421.55/x
  3. Step 3: Cross multiply
    9,779,677.76x = 13,495,280.20 × 5,428,421.55
  4. Step 4: Simplify right side
    9,779,677.76x = 73,258,069,847,397.25
  5. Step 5: Solve for x
    x = 73,258,069,847,397.25/9,779,677.76
  6. Step 6: Final answer
    x = 7,490,847.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.