Home / 780,012.95-1,076,398.55-435,827.75

Finding the Fourth Proportional to 780,012.95, 1,076,398.55 and 435,827.75

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Solution

The fourth proportional to 780,012.95, 1,076,398.55 and 435,827.75 is: 601,431.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,012.95 : 1,076,398.55 = 435,827.75 : x
  2. Step 2: Convert to fraction form
    780,012.95/1,076,398.55 = 435,827.75/x
  3. Step 3: Cross multiply
    780,012.95x = 1,076,398.55 × 435,827.75
  4. Step 4: Simplify right side
    780,012.95x = 469,124,358,149.76
  5. Step 5: Solve for x
    x = 469,124,358,149.76/780,012.95
  6. Step 6: Final answer
    x = 601,431.50

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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.