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Finding the Fourth Proportional to 478,970.40, 660,983.76 and 264,118.08

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Solution

The fourth proportional to 478,970.40, 660,983.76 and 264,118.08 is: 364,485.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,970.40 : 660,983.76 = 264,118.08 : x
  2. Step 2: Convert to fraction form
    478,970.40/660,983.76 = 264,118.08/x
  3. Step 3: Cross multiply
    478,970.40x = 660,983.76 × 264,118.08
  4. Step 4: Simplify right side
    478,970.40x = 174,577,761,602.38
  5. Step 5: Solve for x
    x = 174,577,761,602.38/478,970.40
  6. Step 6: Final answer
    x = 364,485.49

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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.