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Finding the Fourth Proportional to 916,119, 1,264,247.40 and 508,228.92

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Solution

The fourth proportional to 916,119, 1,264,247.40 and 508,228.92 is: 701,357.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,119 : 1,264,247.40 = 508,228.92 : x
  2. Step 2: Convert to fraction form
    916,119/1,264,247.40 = 508,228.92/x
  3. Step 3: Cross multiply
    916,119x = 1,264,247.40 × 508,228.92
  4. Step 4: Simplify right side
    916,119x = 642,527,090,714.81
  5. Step 5: Solve for x
    x = 642,527,090,714.81/916,119
  6. Step 6: Final answer
    x = 701,357.67

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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.