Home / 780,007.80-1,076,911.02-637,110.84

Finding the Fourth Proportional to 780,007.80, 1,076,911.02 and 637,110.84

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Solution

The fourth proportional to 780,007.80, 1,076,911.02 and 637,110.84 is: 879,621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,007.80 : 1,076,911.02 = 637,110.84 : x
  2. Step 2: Convert to fraction form
    780,007.80/1,076,911.02 = 637,110.84/x
  3. Step 3: Cross multiply
    780,007.80x = 1,076,911.02 × 637,110.84
  4. Step 4: Simplify right side
    780,007.80x = 686,111,684,557.46
  5. Step 5: Solve for x
    x = 686,111,684,557.46/780,007.80
  6. Step 6: Final answer
    x = 879,621.57

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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.