Home / 651,808,280.40-977,712,420.60-307,434,512.40

Finding the Fourth Proportional to 651,808,280.40, 977,712,420.60 and 307,434,512.40

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Solution

The fourth proportional to 651,808,280.40, 977,712,420.60 and 307,434,512.40 is: 461,151,768.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,808,280.40 : 977,712,420.60 = 307,434,512.40 : x
  2. Step 2: Convert to fraction form
    651,808,280.40/977,712,420.60 = 307,434,512.40/x
  3. Step 3: Cross multiply
    651,808,280.40x = 977,712,420.60 × 307,434,512.40
  4. Step 4: Simplify right side
    651,808,280.40x = 300,582,541,294,584,704
  5. Step 5: Solve for x
    x = 300,582,541,294,584,704/651,808,280.40
  6. Step 6: Final answer
    x = 461,151,768.60

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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.