Home / 426,528,041.20-639,792,061.80-353,826,912.40

Finding the Fourth Proportional to 426,528,041.20, 639,792,061.80 and 353,826,912.40

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Solution

The fourth proportional to 426,528,041.20, 639,792,061.80 and 353,826,912.40 is: 530,740,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,528,041.20 : 639,792,061.80 = 353,826,912.40 : x
  2. Step 2: Convert to fraction form
    426,528,041.20/639,792,061.80 = 353,826,912.40/x
  3. Step 3: Cross multiply
    426,528,041.20x = 639,792,061.80 × 353,826,912.40
  4. Step 4: Simplify right side
    426,528,041.20x = 226,375,649,804,723,968
  5. Step 5: Solve for x
    x = 226,375,649,804,723,968/426,528,041.20
  6. Step 6: Final answer
    x = 530,740,368.60

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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.