Home / 748,865,347.20-1,123,298,020.80-727,341,986.70

Finding the Fourth Proportional to 748,865,347.20, 1,123,298,020.80 and 727,341,986.70

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Solution

The fourth proportional to 748,865,347.20, 1,123,298,020.80 and 727,341,986.70 is: 1,091,012,980.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,865,347.20 : 1,123,298,020.80 = 727,341,986.70 : x
  2. Step 2: Convert to fraction form
    748,865,347.20/1,123,298,020.80 = 727,341,986.70/x
  3. Step 3: Cross multiply
    748,865,347.20x = 1,123,298,020.80 × 727,341,986.70
  4. Step 4: Simplify right side
    748,865,347.20x = 817,021,814,104,849,920
  5. Step 5: Solve for x
    x = 817,021,814,104,849,920/748,865,347.20
  6. Step 6: Final answer
    x = 1,091,012,980.05

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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.