Home / 287,580,889,421.40-431,371,334,132.10-120,008,613,912.60

Finding the Fourth Proportional to 287,580,889,421.40, 431,371,334,132.10 and 120,008,613,912.60

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Solution

The fourth proportional to 287,580,889,421.40, 431,371,334,132.10 and 120,008,613,912.60 is: 180,012,920,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,580,889,421.40 : 431,371,334,132.10 = 120,008,613,912.60 : x
  2. Step 2: Convert to fraction form
    287,580,889,421.40/431,371,334,132.10 = 120,008,613,912.60/x
  3. Step 3: Cross multiply
    287,580,889,421.40x = 431,371,334,132.10 × 120,008,613,912.60
  4. Step 4: Simplify right side
    287,580,889,421.40x = 51,768,275,890,822,361,120,768
  5. Step 5: Solve for x
    x = 51,768,275,890,822,361,120,768/287,580,889,421.40
  6. Step 6: Final answer
    x = 180,012,920,868.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.