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Finding the Fourth Proportional to 638,752.95, 881,479.80 and 348,365.07

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Solution

The fourth proportional to 638,752.95, 881,479.80 and 348,365.07 is: 480,744.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,752.95 : 881,479.80 = 348,365.07 : x
  2. Step 2: Convert to fraction form
    638,752.95/881,479.80 = 348,365.07/x
  3. Step 3: Cross multiply
    638,752.95x = 881,479.80 × 348,365.07
  4. Step 4: Simplify right side
    638,752.95x = 307,076,772,230.59
  5. Step 5: Solve for x
    x = 307,076,772,230.59/638,752.95
  6. Step 6: Final answer
    x = 480,744.19

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1.5x scale

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.