Home / 918,225.60-1,377,338.40-638,289.60

Finding the Fourth Proportional to 918,225.60, 1,377,338.40 and 638,289.60

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Solution

The fourth proportional to 918,225.60, 1,377,338.40 and 638,289.60 is: 957,434.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,225.60 : 1,377,338.40 = 638,289.60 : x
  2. Step 2: Convert to fraction form
    918,225.60/1,377,338.40 = 638,289.60/x
  3. Step 3: Cross multiply
    918,225.60x = 1,377,338.40 × 638,289.60
  4. Step 4: Simplify right side
    918,225.60x = 879,140,776,400.64
  5. Step 5: Solve for x
    x = 879,140,776,400.64/918,225.60
  6. Step 6: Final answer
    x = 957,434.40

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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.