Home / 387,460,116.20-535,205,355.86-287,191,819.60

Finding the Fourth Proportional to 387,460,116.20, 535,205,355.86 and 287,191,819.60

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Solution

The fourth proportional to 387,460,116.20, 535,205,355.86 and 287,191,819.60 is: 396,703,024.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,460,116.20 : 535,205,355.86 = 287,191,819.60 : x
  2. Step 2: Convert to fraction form
    387,460,116.20/535,205,355.86 = 287,191,819.60/x
  3. Step 3: Cross multiply
    387,460,116.20x = 535,205,355.86 × 287,191,819.60
  4. Step 4: Simplify right side
    387,460,116.20x = 153,706,600,009,098,944
  5. Step 5: Solve for x
    x = 153,706,600,009,098,944/387,460,116.20
  6. Step 6: Final answer
    x = 396,703,024.60

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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.