Home / 1,280,138.16-1,766,580.12-707,166.30

Finding the Fourth Proportional to 1,280,138.16, 1,766,580.12 and 707,166.30

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Solution

The fourth proportional to 1,280,138.16, 1,766,580.12 and 707,166.30 is: 975,883.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,138.16 : 1,766,580.12 = 707,166.30 : x
  2. Step 2: Convert to fraction form
    1,280,138.16/1,766,580.12 = 707,166.30/x
  3. Step 3: Cross multiply
    1,280,138.16x = 1,766,580.12 × 707,166.30
  4. Step 4: Simplify right side
    1,280,138.16x = 1,249,265,927,113.96
  5. Step 5: Solve for x
    x = 1,249,265,927,113.96/1,280,138.16
  6. Step 6: Final answer
    x = 975,883.67

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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.