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Finding the Fourth Proportional to 660,937.54, 912,090.63 and 374,457.01

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Solution

The fourth proportional to 660,937.54, 912,090.63 and 374,457.01 is: 516,748.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,937.54 : 912,090.63 = 374,457.01 : x
  2. Step 2: Convert to fraction form
    660,937.54/912,090.63 = 374,457.01/x
  3. Step 3: Cross multiply
    660,937.54x = 912,090.63 × 374,457.01
  4. Step 4: Simplify right side
    660,937.54x = 341,538,730,158.82
  5. Step 5: Solve for x
    x = 341,538,730,158.82/660,937.54
  6. Step 6: Final answer
    x = 516,748.87

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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.