Home / 912,803.10-1,369,204.65-313,710.90

Finding the Fourth Proportional to 912,803.10, 1,369,204.65 and 313,710.90

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Solution

The fourth proportional to 912,803.10, 1,369,204.65 and 313,710.90 is: 470,566.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,803.10 : 1,369,204.65 = 313,710.90 : x
  2. Step 2: Convert to fraction form
    912,803.10/1,369,204.65 = 313,710.90/x
  3. Step 3: Cross multiply
    912,803.10x = 1,369,204.65 × 313,710.90
  4. Step 4: Simplify right side
    912,803.10x = 429,534,423,035.69
  5. Step 5: Solve for x
    x = 429,534,423,035.69/912,803.10
  6. Step 6: Final answer
    x = 470,566.35

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Double scale
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Similar ratio
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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.