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Finding the Fourth Proportional to 615,506.65, 849,395.93 and 357,447.05

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Solution

The fourth proportional to 615,506.65, 849,395.93 and 357,447.05 is: 493,275.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,506.65 : 849,395.93 = 357,447.05 : x
  2. Step 2: Convert to fraction form
    615,506.65/849,395.93 = 357,447.05/x
  3. Step 3: Cross multiply
    615,506.65x = 849,395.93 × 357,447.05
  4. Step 4: Simplify right side
    615,506.65x = 303,614,069,460.51
  5. Step 5: Solve for x
    x = 303,614,069,460.51/615,506.65
  6. Step 6: Final answer
    x = 493,275.04

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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.