Home / 729,113.48-1,006,055.88-487,007.72

Finding the Fourth Proportional to 729,113.48, 1,006,055.88 and 487,007.72

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Solution

The fourth proportional to 729,113.48, 1,006,055.88 and 487,007.72 is: 671,990.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,113.48 : 1,006,055.88 = 487,007.72 : x
  2. Step 2: Convert to fraction form
    729,113.48/1,006,055.88 = 487,007.72/x
  3. Step 3: Cross multiply
    729,113.48x = 1,006,055.88 × 487,007.72
  4. Step 4: Simplify right side
    729,113.48x = 489,956,980,311.39
  5. Step 5: Solve for x
    x = 489,956,980,311.39/729,113.48
  6. Step 6: Final answer
    x = 671,990.02

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1.5x scale

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.