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Finding the Fourth Proportional to 478,656.07, 660,714.55 and 427,580.10

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Solution

The fourth proportional to 478,656.07, 660,714.55 and 427,580.10 is: 590,211.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,656.07 : 660,714.55 = 427,580.10 : x
  2. Step 2: Convert to fraction form
    478,656.07/660,714.55 = 427,580.10/x
  3. Step 3: Cross multiply
    478,656.07x = 660,714.55 × 427,580.10
  4. Step 4: Simplify right side
    478,656.07x = 282,508,392,291.51
  5. Step 5: Solve for x
    x = 282,508,392,291.51/478,656.07
  6. Step 6: Final answer
    x = 590,211.66

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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.