Home / 458,475,821.60-687,713,732.40-313,356,999.20

Finding the Fourth Proportional to 458,475,821.60, 687,713,732.40 and 313,356,999.20

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Solution

The fourth proportional to 458,475,821.60, 687,713,732.40 and 313,356,999.20 is: 470,035,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,475,821.60 : 687,713,732.40 = 313,356,999.20 : x
  2. Step 2: Convert to fraction form
    458,475,821.60/687,713,732.40 = 313,356,999.20/x
  3. Step 3: Cross multiply
    458,475,821.60x = 687,713,732.40 × 313,356,999.20
  4. Step 4: Simplify right side
    458,475,821.60x = 215,499,911,493,495,808
  5. Step 5: Solve for x
    x = 215,499,911,493,495,808/458,475,821.60
  6. Step 6: Final answer
    x = 470,035,498.80

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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.