Home / 1,384,036.16-1,909,970.24-780,424.32

Finding the Fourth Proportional to 1,384,036.16, 1,909,970.24 and 780,424.32

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Solution

The fourth proportional to 1,384,036.16, 1,909,970.24 and 780,424.32 is: 1,076,985.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,036.16 : 1,909,970.24 = 780,424.32 : x
  2. Step 2: Convert to fraction form
    1,384,036.16/1,909,970.24 = 780,424.32/x
  3. Step 3: Cross multiply
    1,384,036.16x = 1,909,970.24 × 780,424.32
  4. Step 4: Simplify right side
    1,384,036.16x = 1,490,587,225,772.24
  5. Step 5: Solve for x
    x = 1,490,587,225,772.24/1,384,036.16
  6. Step 6: Final answer
    x = 1,076,985.75

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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.