Home / 1,272,492,273.69-1,908,719,254.47-572,490,085.43

Finding the Fourth Proportional to 1,272,492,273.69, 1,908,719,254.47 and 572,490,085.43

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Solution

The fourth proportional to 1,272,492,273.69, 1,908,719,254.47 and 572,490,085.43 is: 858,726,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,492,273.69 : 1,908,719,254.47 = 572,490,085.43 : x
  2. Step 2: Convert to fraction form
    1,272,492,273.69/1,908,719,254.47 = 572,490,085.43/x
  3. Step 3: Cross multiply
    1,272,492,273.69x = 1,908,719,254.47 × 572,490,085.43
  4. Step 4: Simplify right side
    1,272,492,273.69x = 1,092,722,849,060,363,392
  5. Step 5: Solve for x
    x = 1,092,722,849,060,363,392/1,272,492,273.69
  6. Step 6: Final answer
    x = 858,726,509.90

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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.