Home / 423,128.32-583,461.12-321,341.44

Finding the Fourth Proportional to 423,128.32, 583,461.12 and 321,341.44

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Solution

The fourth proportional to 423,128.32, 583,461.12 and 321,341.44 is: 443,104.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,128.32 : 583,461.12 = 321,341.44 : x
  2. Step 2: Convert to fraction form
    423,128.32/583,461.12 = 321,341.44/x
  3. Step 3: Cross multiply
    423,128.32x = 583,461.12 × 321,341.44
  4. Step 4: Simplify right side
    423,128.32x = 187,490,236,484.81
  5. Step 5: Solve for x
    x = 187,490,236,484.81/423,128.32
  6. Step 6: Final answer
    x = 443,104.91

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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.