Home / 692,000.40-1,038,000.60-218,830.80

Finding the Fourth Proportional to 692,000.40, 1,038,000.60 and 218,830.80

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Solution

The fourth proportional to 692,000.40, 1,038,000.60 and 218,830.80 is: 328,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,000.40 : 1,038,000.60 = 218,830.80 : x
  2. Step 2: Convert to fraction form
    692,000.40/1,038,000.60 = 218,830.80/x
  3. Step 3: Cross multiply
    692,000.40x = 1,038,000.60 × 218,830.80
  4. Step 4: Simplify right side
    692,000.40x = 227,146,501,698.48
  5. Step 5: Solve for x
    x = 227,146,501,698.48/692,000.40
  6. Step 6: Final answer
    x = 328,246.20

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1.5x scale

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.