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Finding the Fourth Proportional to 1,047,315, 1,445,294.70 and 570,387

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Solution

The fourth proportional to 1,047,315, 1,445,294.70 and 570,387 is: 787,134.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047,315 : 1,445,294.70 = 570,387 : x
  2. Step 2: Convert to fraction form
    1,047,315/1,445,294.70 = 570,387/x
  3. Step 3: Cross multiply
    1,047,315x = 1,445,294.70 × 570,387
  4. Step 4: Simplify right side
    1,047,315x = 824,377,308,048.90
  5. Step 5: Solve for x
    x = 824,377,308,048.90/1,047,315
  6. Step 6: Final answer
    x = 787,134.06

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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.