Home / 723,106.39-997,934.85-400,830.07

Finding the Fourth Proportional to 723,106.39, 997,934.85 and 400,830.07

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Solution

The fourth proportional to 723,106.39, 997,934.85 and 400,830.07 is: 553,172.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,106.39 : 997,934.85 = 400,830.07 : x
  2. Step 2: Convert to fraction form
    723,106.39/997,934.85 = 400,830.07/x
  3. Step 3: Cross multiply
    723,106.39x = 997,934.85 × 400,830.07
  4. Step 4: Simplify right side
    723,106.39x = 400,002,295,780.94
  5. Step 5: Solve for x
    x = 400,002,295,780.94/723,106.39
  6. Step 6: Final answer
    x = 553,172.12

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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.