Home / 716,903.60-1,075,355.40-639,489.20

Finding the Fourth Proportional to 716,903.60, 1,075,355.40 and 639,489.20

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Solution

The fourth proportional to 716,903.60, 1,075,355.40 and 639,489.20 is: 959,233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,903.60 : 1,075,355.40 = 639,489.20 : x
  2. Step 2: Convert to fraction form
    716,903.60/1,075,355.40 = 639,489.20/x
  3. Step 3: Cross multiply
    716,903.60x = 1,075,355.40 × 639,489.20
  4. Step 4: Simplify right side
    716,903.60x = 687,678,164,461.68
  5. Step 5: Solve for x
    x = 687,678,164,461.68/716,903.60
  6. Step 6: Final answer
    x = 959,233.80

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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.