Home / 876,142.31-1,209,623.76-671,800.70

Finding the Fourth Proportional to 876,142.31, 1,209,623.76 and 671,800.70

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Solution

The fourth proportional to 876,142.31, 1,209,623.76 and 671,800.70 is: 927,504.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,142.31 : 1,209,623.76 = 671,800.70 : x
  2. Step 2: Convert to fraction form
    876,142.31/1,209,623.76 = 671,800.70/x
  3. Step 3: Cross multiply
    876,142.31x = 1,209,623.76 × 671,800.70
  4. Step 4: Simplify right side
    876,142.31x = 812,626,091,728.69
  5. Step 5: Solve for x
    x = 812,626,091,728.69/876,142.31
  6. Step 6: Final answer
    x = 927,504.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.