Home / 1,389,153.15-1,916,423.10-815,934.96

Finding the Fourth Proportional to 1,389,153.15, 1,916,423.10 and 815,934.96

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Solution

The fourth proportional to 1,389,153.15, 1,916,423.10 and 815,934.96 is: 1,125,632.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,153.15 : 1,916,423.10 = 815,934.96 : x
  2. Step 2: Convert to fraction form
    1,389,153.15/1,916,423.10 = 815,934.96/x
  3. Step 3: Cross multiply
    1,389,153.15x = 1,916,423.10 × 815,934.96
  4. Step 4: Simplify right side
    1,389,153.15x = 1,563,676,605,441.58
  5. Step 5: Solve for x
    x = 1,563,676,605,441.58/1,389,153.15
  6. Step 6: Final answer
    x = 1,125,632.98

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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.