Home / 287,711,999.60-431,567,999.40-126,153,935.60

Finding the Fourth Proportional to 287,711,999.60, 431,567,999.40 and 126,153,935.60

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Solution

The fourth proportional to 287,711,999.60, 431,567,999.40 and 126,153,935.60 is: 189,230,903.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,711,999.60 : 431,567,999.40 = 126,153,935.60 : x
  2. Step 2: Convert to fraction form
    287,711,999.60/431,567,999.40 = 126,153,935.60/x
  3. Step 3: Cross multiply
    287,711,999.60x = 431,567,999.40 × 126,153,935.60
  4. Step 4: Simplify right side
    287,711,999.60x = 54,444,001,603,328,432
  5. Step 5: Solve for x
    x = 54,444,001,603,328,432/287,711,999.60
  6. Step 6: Final answer
    x = 189,230,903.40

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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.