Home / 666,985.19-1,000,479.14-312,248.32

Finding the Fourth Proportional to 666,985.19, 1,000,479.14 and 312,248.32

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Solution

The fourth proportional to 666,985.19, 1,000,479.14 and 312,248.32 is: 468,373.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,985.19 : 1,000,479.14 = 312,248.32 : x
  2. Step 2: Convert to fraction form
    666,985.19/1,000,479.14 = 312,248.32/x
  3. Step 3: Cross multiply
    666,985.19x = 1,000,479.14 × 312,248.32
  4. Step 4: Simplify right side
    666,985.19x = 312,397,929,524.93
  5. Step 5: Solve for x
    x = 312,397,929,524.93/666,985.19
  6. Step 6: Final answer
    x = 468,373.12

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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.