Home / 913,636.89-1,260,803.61-505,729.95

Finding the Fourth Proportional to 913,636.89, 1,260,803.61 and 505,729.95

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Solution

The fourth proportional to 913,636.89, 1,260,803.61 and 505,729.95 is: 697,898.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,636.89 : 1,260,803.61 = 505,729.95 : x
  2. Step 2: Convert to fraction form
    913,636.89/1,260,803.61 = 505,729.95/x
  3. Step 3: Cross multiply
    913,636.89x = 1,260,803.61 × 505,729.95
  4. Step 4: Simplify right side
    913,636.89x = 637,626,154,688.71
  5. Step 5: Solve for x
    x = 637,626,154,688.71/913,636.89
  6. Step 6: Final answer
    x = 697,898.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.