Home / 762,678.81-1,143,569.64-289,397.43

Finding the Fourth Proportional to 762,678.81, 1,143,569.64 and 289,397.43

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Solution

The fourth proportional to 762,678.81, 1,143,569.64 and 289,397.43 is: 433,925.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,678.81 : 1,143,569.64 = 289,397.43 : x
  2. Step 2: Convert to fraction form
    762,678.81/1,143,569.64 = 289,397.43/x
  3. Step 3: Cross multiply
    762,678.81x = 1,143,569.64 × 289,397.43
  4. Step 4: Simplify right side
    762,678.81x = 330,946,114,842.03
  5. Step 5: Solve for x
    x = 330,946,114,842.03/762,678.81
  6. Step 6: Final answer
    x = 433,925.93

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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.