Home / 287,580,905,999.40-431,371,358,999.10-120,008,630,490.60

Finding the Fourth Proportional to 287,580,905,999.40, 431,371,358,999.10 and 120,008,630,490.60

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Solution

The fourth proportional to 287,580,905,999.40, 431,371,358,999.10 and 120,008,630,490.60 is: 180,012,945,735.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,580,905,999.40 : 431,371,358,999.10 = 120,008,630,490.60 : x
  2. Step 2: Convert to fraction form
    287,580,905,999.40/431,371,358,999.10 = 120,008,630,490.60/x
  3. Step 3: Cross multiply
    287,580,905,999.40x = 431,371,358,999.10 × 120,008,630,490.60
  4. Step 4: Simplify right side
    287,580,905,999.40x = 51,768,286,026,350,947,467,264
  5. Step 5: Solve for x
    x = 51,768,286,026,350,947,467,264/287,580,905,999.40
  6. Step 6: Final answer
    x = 180,012,945,735.90

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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.