Home / 420,526.70-630,547.66-287,568.04

Finding the Fourth Proportional to 420,526.70, 630,547.66 and 287,568.04

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Solution

The fourth proportional to 420,526.70, 630,547.66 and 287,568.04 is: 431,186.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,526.70 : 630,547.66 = 287,568.04 : x
  2. Step 2: Convert to fraction form
    420,526.70/630,547.66 = 287,568.04/x
  3. Step 3: Cross multiply
    420,526.70x = 630,547.66 × 287,568.04
  4. Step 4: Simplify right side
    420,526.70x = 181,325,354,712.79
  5. Step 5: Solve for x
    x = 181,325,354,712.79/420,526.70
  6. Step 6: Final answer
    x = 431,186.31

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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.