Home / 885,890.05-1,329,028.88-286,911.76

Finding the Fourth Proportional to 885,890.05, 1,329,028.88 and 286,911.76

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Solution

The fourth proportional to 885,890.05, 1,329,028.88 and 286,911.76 is: 430,430.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,890.05 : 1,329,028.88 = 286,911.76 : x
  2. Step 2: Convert to fraction form
    885,890.05/1,329,028.88 = 286,911.76/x
  3. Step 3: Cross multiply
    885,890.05x = 1,329,028.88 × 286,911.76
  4. Step 4: Simplify right side
    885,890.05x = 381,314,006,971.93
  5. Step 5: Solve for x
    x = 381,314,006,971.93/885,890.05
  6. Step 6: Final answer
    x = 430,430.40

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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.