Home / 913,316.28-1,260,345.51-505,435.38

Finding the Fourth Proportional to 913,316.28, 1,260,345.51 and 505,435.38

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Solution

The fourth proportional to 913,316.28, 1,260,345.51 and 505,435.38 is: 697,483.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,316.28 : 1,260,345.51 = 505,435.38 : x
  2. Step 2: Convert to fraction form
    913,316.28/1,260,345.51 = 505,435.38/x
  3. Step 3: Cross multiply
    913,316.28x = 1,260,345.51 × 505,435.38
  4. Step 4: Simplify right side
    913,316.28x = 637,023,211,778.14
  5. Step 5: Solve for x
    x = 637,023,211,778.14/913,316.28
  6. Step 6: Final answer
    x = 697,483.69

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Double scale
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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.