Home / 899,901.46-1,242,176.76-518,080.42

Finding the Fourth Proportional to 899,901.46, 1,242,176.76 and 518,080.42

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Solution

The fourth proportional to 899,901.46, 1,242,176.76 and 518,080.42 is: 715,131.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,901.46 : 1,242,176.76 = 518,080.42 : x
  2. Step 2: Convert to fraction form
    899,901.46/1,242,176.76 = 518,080.42/x
  3. Step 3: Cross multiply
    899,901.46x = 1,242,176.76 × 518,080.42
  4. Step 4: Simplify right side
    899,901.46x = 643,547,457,535.04
  5. Step 5: Solve for x
    x = 643,547,457,535.04/899,901.46
  6. Step 6: Final answer
    x = 715,131.03

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Half scale
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Double scale
Find fourth proportional to 899,902.46, 1,242,178.14 and 518,081.42
Similar ratio
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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.