Home / 1,230,624.23-1,698,217.14-771,985.72

Finding the Fourth Proportional to 1,230,624.23, 1,698,217.14 and 771,985.72

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Solution

The fourth proportional to 1,230,624.23, 1,698,217.14 and 771,985.72 is: 1,065,312.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,624.23 : 1,698,217.14 = 771,985.72 : x
  2. Step 2: Convert to fraction form
    1,230,624.23/1,698,217.14 = 771,985.72/x
  3. Step 3: Cross multiply
    1,230,624.23x = 1,698,217.14 × 771,985.72
  4. Step 4: Simplify right side
    1,230,624.23x = 1,310,999,386,556.96
  5. Step 5: Solve for x
    x = 1,310,999,386,556.96/1,230,624.23
  6. Step 6: Final answer
    x = 1,065,312.51

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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.