Home / 645,246.66-890,434.98-358,764.24

Finding the Fourth Proportional to 645,246.66, 890,434.98 and 358,764.24

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Solution

The fourth proportional to 645,246.66, 890,434.98 and 358,764.24 is: 495,091.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,246.66 : 890,434.98 = 358,764.24 : x
  2. Step 2: Convert to fraction form
    645,246.66/890,434.98 = 358,764.24/x
  3. Step 3: Cross multiply
    645,246.66x = 890,434.98 × 358,764.24
  4. Step 4: Simplify right side
    645,246.66x = 319,456,228,869.12
  5. Step 5: Solve for x
    x = 319,456,228,869.12/645,246.66
  6. Step 6: Final answer
    x = 495,091.64

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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.