Home / 1,121,189.89-1,547,038.33-662,379.16

Finding the Fourth Proportional to 1,121,189.89, 1,547,038.33 and 662,379.16

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Solution

The fourth proportional to 1,121,189.89, 1,547,038.33 and 662,379.16 is: 913,962.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,189.89 : 1,547,038.33 = 662,379.16 : x
  2. Step 2: Convert to fraction form
    1,121,189.89/1,547,038.33 = 662,379.16/x
  3. Step 3: Cross multiply
    1,121,189.89x = 1,547,038.33 × 662,379.16
  4. Step 4: Simplify right side
    1,121,189.89x = 1,024,725,949,513.20
  5. Step 5: Solve for x
    x = 1,024,725,949,513.20/1,121,189.89
  6. Step 6: Final answer
    x = 913,962.89

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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.