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Finding the Fourth Proportional to 702,931.81, 970,050.51 and 380,641.93

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Solution

The fourth proportional to 702,931.81, 970,050.51 and 380,641.93 is: 525,288.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,931.81 : 970,050.51 = 380,641.93 : x
  2. Step 2: Convert to fraction form
    702,931.81/970,050.51 = 380,641.93/x
  3. Step 3: Cross multiply
    702,931.81x = 970,050.51 × 380,641.93
  4. Step 4: Simplify right side
    702,931.81x = 369,241,898,323.88
  5. Step 5: Solve for x
    x = 369,241,898,323.88/702,931.81
  6. Step 6: Final answer
    x = 525,288.36

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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.