Home / 877,509.95-1,316,264.91-212,661.95

Finding the Fourth Proportional to 877,509.95, 1,316,264.91 and 212,661.95

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Solution

The fourth proportional to 877,509.95, 1,316,264.91 and 212,661.95 is: 318,992.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,509.95 : 1,316,264.91 = 212,661.95 : x
  2. Step 2: Convert to fraction form
    877,509.95/1,316,264.91 = 212,661.95/x
  3. Step 3: Cross multiply
    877,509.95x = 1,316,264.91 × 212,661.95
  4. Step 4: Simplify right side
    877,509.95x = 279,919,455,895.85
  5. Step 5: Solve for x
    x = 279,919,455,895.85/877,509.95
  6. Step 6: Final answer
    x = 318,992.92

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Double scale
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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.