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Finding the Fourth Proportional to 500,547.70, 690,590.45 and 306,883.70

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Solution

The fourth proportional to 500,547.70, 690,590.45 and 306,883.70 is: 423,398.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,547.70 : 690,590.45 = 306,883.70 : x
  2. Step 2: Convert to fraction form
    500,547.70/690,590.45 = 306,883.70/x
  3. Step 3: Cross multiply
    500,547.70x = 690,590.45 × 306,883.70
  4. Step 4: Simplify right side
    500,547.70x = 211,930,952,480.67
  5. Step 5: Solve for x
    x = 211,930,952,480.67/500,547.70
  6. Step 6: Final answer
    x = 423,398.11

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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.