Home / 290,318,744.40-435,478,116.60-288,303,205.20

Finding the Fourth Proportional to 290,318,744.40, 435,478,116.60 and 288,303,205.20

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Solution

The fourth proportional to 290,318,744.40, 435,478,116.60 and 288,303,205.20 is: 432,454,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,318,744.40 : 435,478,116.60 = 288,303,205.20 : x
  2. Step 2: Convert to fraction form
    290,318,744.40/435,478,116.60 = 288,303,205.20/x
  3. Step 3: Cross multiply
    290,318,744.40x = 435,478,116.60 × 288,303,205.20
  4. Step 4: Simplify right side
    290,318,744.40x = 125,549,736,810,239,328
  5. Step 5: Solve for x
    x = 125,549,736,810,239,328/290,318,744.40
  6. Step 6: Final answer
    x = 432,454,807.80

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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.