Home / 919,870.86-1,269,421.47-517,462.86

Finding the Fourth Proportional to 919,870.86, 1,269,421.47 and 517,462.86

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Solution

The fourth proportional to 919,870.86, 1,269,421.47 and 517,462.86 is: 714,098.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,870.86 : 1,269,421.47 = 517,462.86 : x
  2. Step 2: Convert to fraction form
    919,870.86/1,269,421.47 = 517,462.86/x
  3. Step 3: Cross multiply
    919,870.86x = 1,269,421.47 × 517,462.86
  4. Step 4: Simplify right side
    919,870.86x = 656,878,464,411.60
  5. Step 5: Solve for x
    x = 656,878,464,411.60/919,870.86
  6. Step 6: Final answer
    x = 714,098.57

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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.