Home / 1,128,143.04-1,556,822.88-644,702.64

Finding the Fourth Proportional to 1,128,143.04, 1,556,822.88 and 644,702.64

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Solution

The fourth proportional to 1,128,143.04, 1,556,822.88 and 644,702.64 is: 889,681.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,143.04 : 1,556,822.88 = 644,702.64 : x
  2. Step 2: Convert to fraction form
    1,128,143.04/1,556,822.88 = 644,702.64/x
  3. Step 3: Cross multiply
    1,128,143.04x = 1,556,822.88 × 644,702.64
  4. Step 4: Simplify right side
    1,128,143.04x = 1,003,687,820,748.40
  5. Step 5: Solve for x
    x = 1,003,687,820,748.40/1,128,143.04
  6. Step 6: Final answer
    x = 889,681.35

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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.