Home / 780,856.47-1,077,574.32-436,688.55

Finding the Fourth Proportional to 780,856.47, 1,077,574.32 and 436,688.55

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Solution

The fourth proportional to 780,856.47, 1,077,574.32 and 436,688.55 is: 602,625.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,856.47 : 1,077,574.32 = 436,688.55 : x
  2. Step 2: Convert to fraction form
    780,856.47/1,077,574.32 = 436,688.55/x
  3. Step 3: Cross multiply
    780,856.47x = 1,077,574.32 × 436,688.55
  4. Step 4: Simplify right side
    780,856.47x = 470,564,367,318.04
  5. Step 5: Solve for x
    x = 470,564,367,318.04/780,856.47
  6. Step 6: Final answer
    x = 602,625.94

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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.