Home / 1,009,407.86-1,392,631.07-647,031.53

Finding the Fourth Proportional to 1,009,407.86, 1,392,631.07 and 647,031.53

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Solution

The fourth proportional to 1,009,407.86, 1,392,631.07 and 647,031.53 is: 892,678.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009,407.86 : 1,392,631.07 = 647,031.53 : x
  2. Step 2: Convert to fraction form
    1,009,407.86/1,392,631.07 = 647,031.53/x
  3. Step 3: Cross multiply
    1,009,407.86x = 1,392,631.07 × 647,031.53
  4. Step 4: Simplify right side
    1,009,407.86x = 901,076,208,712.48
  5. Step 5: Solve for x
    x = 901,076,208,712.48/1,009,407.86
  6. Step 6: Final answer
    x = 892,678.02

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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.