Home / 681,031.80-1,021,547.70-432,814.20

Finding the Fourth Proportional to 681,031.80, 1,021,547.70 and 432,814.20

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Solution

The fourth proportional to 681,031.80, 1,021,547.70 and 432,814.20 is: 649,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,031.80 : 1,021,547.70 = 432,814.20 : x
  2. Step 2: Convert to fraction form
    681,031.80/1,021,547.70 = 432,814.20/x
  3. Step 3: Cross multiply
    681,031.80x = 1,021,547.70 × 432,814.20
  4. Step 4: Simplify right side
    681,031.80x = 442,140,350,537.34
  5. Step 5: Solve for x
    x = 442,140,350,537.34/681,031.80
  6. Step 6: Final answer
    x = 649,221.30

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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.