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Finding the Fourth Proportional to 615,533.76, 849,820.80 and 472,017.60

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Solution

The fourth proportional to 615,533.76, 849,820.80 and 472,017.60 is: 651,678.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,533.76 : 849,820.80 = 472,017.60 : x
  2. Step 2: Convert to fraction form
    615,533.76/849,820.80 = 472,017.60/x
  3. Step 3: Cross multiply
    615,533.76x = 849,820.80 × 472,017.60
  4. Step 4: Simplify right side
    615,533.76x = 401,130,374,446.08
  5. Step 5: Solve for x
    x = 401,130,374,446.08/615,533.76
  6. Step 6: Final answer
    x = 651,678.92

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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.