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Finding the Fourth Proportional to 650,547.18, 976,937.49 and 399,303

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Solution

The fourth proportional to 650,547.18, 976,937.49 and 399,303 is: 599,639.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,547.18 : 976,937.49 = 399,303 : x
  2. Step 2: Convert to fraction form
    650,547.18/976,937.49 = 399,303/x
  3. Step 3: Cross multiply
    650,547.18x = 976,937.49 × 399,303
  4. Step 4: Simplify right side
    650,547.18x = 390,094,070,569.47
  5. Step 5: Solve for x
    x = 390,094,070,569.47/650,547.18
  6. Step 6: Final answer
    x = 599,639.94

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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.