Home / 425,736,007.20-638,604,010.80-243,833,594.40

Finding the Fourth Proportional to 425,736,007.20, 638,604,010.80 and 243,833,594.40

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Solution

The fourth proportional to 425,736,007.20, 638,604,010.80 and 243,833,594.40 is: 365,750,391.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,736,007.20 : 638,604,010.80 = 243,833,594.40 : x
  2. Step 2: Convert to fraction form
    425,736,007.20/638,604,010.80 = 243,833,594.40/x
  3. Step 3: Cross multiply
    425,736,007.20x = 638,604,010.80 × 243,833,594.40
  4. Step 4: Simplify right side
    425,736,007.20x = 155,713,111,351,620,416
  5. Step 5: Solve for x
    x = 155,713,111,351,620,416/425,736,007.20
  6. Step 6: Final answer
    x = 365,750,391.60

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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.