Home / 692,000.40-1,038,000.60-621,141.60

Finding the Fourth Proportional to 692,000.40, 1,038,000.60 and 621,141.60

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Solution

The fourth proportional to 692,000.40, 1,038,000.60 and 621,141.60 is: 931,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,000.40 : 1,038,000.60 = 621,141.60 : x
  2. Step 2: Convert to fraction form
    692,000.40/1,038,000.60 = 621,141.60/x
  3. Step 3: Cross multiply
    692,000.40x = 1,038,000.60 × 621,141.60
  4. Step 4: Simplify right side
    692,000.40x = 644,745,353,484.96
  5. Step 5: Solve for x
    x = 644,745,353,484.96/692,000.40
  6. Step 6: Final answer
    x = 931,712.40

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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.