Home / 1,230,562.32-1,698,065.24-771,530.15

Finding the Fourth Proportional to 1,230,562.32, 1,698,065.24 and 771,530.15

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Solution

The fourth proportional to 1,230,562.32, 1,698,065.24 and 771,530.15 is: 1,064,642.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,562.32 : 1,698,065.24 = 771,530.15 : x
  2. Step 2: Convert to fraction form
    1,230,562.32/1,698,065.24 = 771,530.15/x
  3. Step 3: Cross multiply
    1,230,562.32x = 1,698,065.24 × 771,530.15
  4. Step 4: Simplify right side
    1,230,562.32x = 1,310,108,516,979.01
  5. Step 5: Solve for x
    x = 1,310,108,516,979.01/1,230,562.32
  6. Step 6: Final answer
    x = 1,064,642.15

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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.