Home / 485,702.28-669,966.12-313,554.06

Finding the Fourth Proportional to 485,702.28, 669,966.12 and 313,554.06

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Solution

The fourth proportional to 485,702.28, 669,966.12 and 313,554.06 is: 432,508.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,702.28 : 669,966.12 = 313,554.06 : x
  2. Step 2: Convert to fraction form
    485,702.28/669,966.12 = 313,554.06/x
  3. Step 3: Cross multiply
    485,702.28x = 669,966.12 × 313,554.06
  4. Step 4: Simplify right side
    485,702.28x = 210,070,596,988.45
  5. Step 5: Solve for x
    x = 210,070,596,988.45/485,702.28
  6. Step 6: Final answer
    x = 432,508.98

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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.