Home / 645,140,916.80-967,711,375.20-578,628,123.20

Finding the Fourth Proportional to 645,140,916.80, 967,711,375.20 and 578,628,123.20

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Solution

The fourth proportional to 645,140,916.80, 967,711,375.20 and 578,628,123.20 is: 867,942,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,140,916.80 : 967,711,375.20 = 578,628,123.20 : x
  2. Step 2: Convert to fraction form
    645,140,916.80/967,711,375.20 = 578,628,123.20/x
  3. Step 3: Cross multiply
    645,140,916.80x = 967,711,375.20 × 578,628,123.20
  4. Step 4: Simplify right side
    645,140,916.80x = 559,945,016,831,267,072
  5. Step 5: Solve for x
    x = 559,945,016,831,267,072/645,140,916.80
  6. Step 6: Final answer
    x = 867,942,184.80

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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.