Home / 671,921.40-1,006,715.70-435,142.20

Finding the Fourth Proportional to 671,921.40, 1,006,715.70 and 435,142.20

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Solution

The fourth proportional to 671,921.40, 1,006,715.70 and 435,142.20 is: 651,957.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,921.40 : 1,006,715.70 = 435,142.20 : x
  2. Step 2: Convert to fraction form
    671,921.40/1,006,715.70 = 435,142.20/x
  3. Step 3: Cross multiply
    671,921.40x = 1,006,715.70 × 435,142.20
  4. Step 4: Simplify right side
    671,921.40x = 438,064,484,472.54
  5. Step 5: Solve for x
    x = 438,064,484,472.54/671,921.40
  6. Step 6: Final answer
    x = 651,957.93

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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.