Home / 289,346,626.40-434,019,939.60-84,895,368.80

Finding the Fourth Proportional to 289,346,626.40, 434,019,939.60 and 84,895,368.80

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Solution

The fourth proportional to 289,346,626.40, 434,019,939.60 and 84,895,368.80 is: 127,343,053.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,346,626.40 : 434,019,939.60 = 84,895,368.80 : x
  2. Step 2: Convert to fraction form
    289,346,626.40/434,019,939.60 = 84,895,368.80/x
  3. Step 3: Cross multiply
    289,346,626.40x = 434,019,939.60 × 84,895,368.80
  4. Step 4: Simplify right side
    289,346,626.40x = 36,846,282,838,895,728
  5. Step 5: Solve for x
    x = 36,846,282,838,895,728/289,346,626.40
  6. Step 6: Final answer
    x = 127,343,053.20

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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.