Home / 671,918.40-1,006,711.20-435,139.20

Finding the Fourth Proportional to 671,918.40, 1,006,711.20 and 435,139.20

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Solution

The fourth proportional to 671,918.40, 1,006,711.20 and 435,139.20 is: 651,953.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,918.40 : 1,006,711.20 = 435,139.20 : x
  2. Step 2: Convert to fraction form
    671,918.40/1,006,711.20 = 435,139.20/x
  3. Step 3: Cross multiply
    671,918.40x = 1,006,711.20 × 435,139.20
  4. Step 4: Simplify right side
    671,918.40x = 438,059,506,199.04
  5. Step 5: Solve for x
    x = 438,059,506,199.04/671,918.40
  6. Step 6: Final answer
    x = 651,953.43

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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.