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Finding the Fourth Proportional to 615,661.40, 849,547.98 and 357,487.88

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Solution

The fourth proportional to 615,661.40, 849,547.98 and 357,487.88 is: 493,295.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,661.40 : 849,547.98 = 357,487.88 : x
  2. Step 2: Convert to fraction form
    615,661.40/849,547.98 = 357,487.88/x
  3. Step 3: Cross multiply
    615,661.40x = 849,547.98 × 357,487.88
  4. Step 4: Simplify right side
    615,661.40x = 303,703,106,328.48
  5. Step 5: Solve for x
    x = 303,703,106,328.48/615,661.40
  6. Step 6: Final answer
    x = 493,295.68

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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.