Home / 758,728.90-1,046,607.51-486,700.12

Finding the Fourth Proportional to 758,728.90, 1,046,607.51 and 486,700.12

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Solution

The fourth proportional to 758,728.90, 1,046,607.51 and 486,700.12 is: 671,364.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,728.90 : 1,046,607.51 = 486,700.12 : x
  2. Step 2: Convert to fraction form
    758,728.90/1,046,607.51 = 486,700.12/x
  3. Step 3: Cross multiply
    758,728.90x = 1,046,607.51 × 486,700.12
  4. Step 4: Simplify right side
    758,728.90x = 509,384,000,709.90
  5. Step 5: Solve for x
    x = 509,384,000,709.90/758,728.90
  6. Step 6: Final answer
    x = 671,364.96

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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.