Home / 869,511.60-1,307,766.60-778,532.40

Finding the Fourth Proportional to 869,511.60, 1,307,766.60 and 778,532.40

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Solution

The fourth proportional to 869,511.60, 1,307,766.60 and 778,532.40 is: 1,170,931.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,511.60 : 1,307,766.60 = 778,532.40 : x
  2. Step 2: Convert to fraction form
    869,511.60/1,307,766.60 = 778,532.40/x
  3. Step 3: Cross multiply
    869,511.60x = 1,307,766.60 × 778,532.40
  4. Step 4: Simplify right side
    869,511.60x = 1,018,138,669,737.84
  5. Step 5: Solve for x
    x = 1,018,138,669,737.84/869,511.60
  6. Step 6: Final answer
    x = 1,170,931.67

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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.