Home / 993,779.80-1,490,669.70-328,931.80

Finding the Fourth Proportional to 993,779.80, 1,490,669.70 and 328,931.80

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Solution

The fourth proportional to 993,779.80, 1,490,669.70 and 328,931.80 is: 493,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,779.80 : 1,490,669.70 = 328,931.80 : x
  2. Step 2: Convert to fraction form
    993,779.80/1,490,669.70 = 328,931.80/x
  3. Step 3: Cross multiply
    993,779.80x = 1,490,669.70 × 328,931.80
  4. Step 4: Simplify right side
    993,779.80x = 490,328,667,626.46
  5. Step 5: Solve for x
    x = 490,328,667,626.46/993,779.80
  6. Step 6: Final answer
    x = 493,397.70

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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.