Home / 803,390.32-1,108,678.13-440,816.50

Finding the Fourth Proportional to 803,390.32, 1,108,678.13 and 440,816.50

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Solution

The fourth proportional to 803,390.32, 1,108,678.13 and 440,816.50 is: 608,326.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,390.32 : 1,108,678.13 = 440,816.50 : x
  2. Step 2: Convert to fraction form
    803,390.32/1,108,678.13 = 440,816.50/x
  3. Step 3: Cross multiply
    803,390.32x = 1,108,678.13 × 440,816.50
  4. Step 4: Simplify right side
    803,390.32x = 488,723,607,349.75
  5. Step 5: Solve for x
    x = 488,723,607,349.75/803,390.32
  6. Step 6: Final answer
    x = 608,326.49

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Double scale
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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.