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Finding the Fourth Proportional to 802,988.64, 1,108,604.88 and 501,590.88

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Solution

The fourth proportional to 802,988.64, 1,108,604.88 and 501,590.88 is: 692,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,988.64 : 1,108,604.88 = 501,590.88 : x
  2. Step 2: Convert to fraction form
    802,988.64/1,108,604.88 = 501,590.88/x
  3. Step 3: Cross multiply
    802,988.64x = 1,108,604.88 × 501,590.88
  4. Step 4: Simplify right side
    802,988.64x = 556,066,097,331.49
  5. Step 5: Solve for x
    x = 556,066,097,331.49/802,988.64
  6. Step 6: Final answer
    x = 692,495.60

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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.