Home / 651,727,712.80-977,591,569.20-392,809,657.60

Finding the Fourth Proportional to 651,727,712.80, 977,591,569.20 and 392,809,657.60

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Solution

The fourth proportional to 651,727,712.80, 977,591,569.20 and 392,809,657.60 is: 589,214,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,727,712.80 : 977,591,569.20 = 392,809,657.60 : x
  2. Step 2: Convert to fraction form
    651,727,712.80/977,591,569.20 = 392,809,657.60/x
  3. Step 3: Cross multiply
    651,727,712.80x = 977,591,569.20 × 392,809,657.60
  4. Step 4: Simplify right side
    651,727,712.80x = 384,007,409,570,098,752
  5. Step 5: Solve for x
    x = 384,007,409,570,098,752/651,727,712.80
  6. Step 6: Final answer
    x = 589,214,486.40

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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.