Home / 939,779.40-1,409,669.10-274,931.40

Finding the Fourth Proportional to 939,779.40, 1,409,669.10 and 274,931.40

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Solution

The fourth proportional to 939,779.40, 1,409,669.10 and 274,931.40 is: 412,397.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,779.40 : 1,409,669.10 = 274,931.40 : x
  2. Step 2: Convert to fraction form
    939,779.40/1,409,669.10 = 274,931.40/x
  3. Step 3: Cross multiply
    939,779.40x = 1,409,669.10 × 274,931.40
  4. Step 4: Simplify right side
    939,779.40x = 387,562,299,199.74
  5. Step 5: Solve for x
    x = 387,562,299,199.74/939,779.40
  6. Step 6: Final answer
    x = 412,397.10

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Similar ratio
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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.