Home / 698,625,819.70-1,047,938,729.55-426,528,027.70

Finding the Fourth Proportional to 698,625,819.70, 1,047,938,729.55 and 426,528,027.70

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Solution

The fourth proportional to 698,625,819.70, 1,047,938,729.55 and 426,528,027.70 is: 639,792,041.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,625,819.70 : 1,047,938,729.55 = 426,528,027.70 : x
  2. Step 2: Convert to fraction form
    698,625,819.70/1,047,938,729.55 = 426,528,027.70/x
  3. Step 3: Cross multiply
    698,625,819.70x = 1,047,938,729.55 × 426,528,027.70
  4. Step 4: Simplify right side
    698,625,819.70x = 446,975,239,465,405,184
  5. Step 5: Solve for x
    x = 446,975,239,465,405,184/698,625,819.70
  6. Step 6: Final answer
    x = 639,792,041.55

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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.