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Finding the Fourth Proportional to 818,547.84, 1,227,988.80 and 345,232.32

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Solution

The fourth proportional to 818,547.84, 1,227,988.80 and 345,232.32 is: 517,918.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,547.84 : 1,227,988.80 = 345,232.32 : x
  2. Step 2: Convert to fraction form
    818,547.84/1,227,988.80 = 345,232.32/x
  3. Step 3: Cross multiply
    818,547.84x = 1,227,988.80 × 345,232.32
  4. Step 4: Simplify right side
    818,547.84x = 423,941,422,358.02
  5. Step 5: Solve for x
    x = 423,941,422,358.02/818,547.84
  6. Step 6: Final answer
    x = 517,918.93

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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.