Home / 658,938.30-986,220.45-478,510.80

Finding the Fourth Proportional to 658,938.30, 986,220.45 and 478,510.80

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Solution

The fourth proportional to 658,938.30, 986,220.45 and 478,510.80 is: 716,178.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,938.30 : 986,220.45 = 478,510.80 : x
  2. Step 2: Convert to fraction form
    658,938.30/986,220.45 = 478,510.80/x
  3. Step 3: Cross multiply
    658,938.30x = 986,220.45 × 478,510.80
  4. Step 4: Simplify right side
    658,938.30x = 471,917,136,505.86
  5. Step 5: Solve for x
    x = 471,917,136,505.86/658,938.30
  6. Step 6: Final answer
    x = 716,178.03

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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.