Home / 919,428-1,268,822.31-506,012.37

Finding the Fourth Proportional to 919,428, 1,268,822.31 and 506,012.37

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Solution

The fourth proportional to 919,428, 1,268,822.31 and 506,012.37 is: 698,303.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,428 : 1,268,822.31 = 506,012.37 : x
  2. Step 2: Convert to fraction form
    919,428/1,268,822.31 = 506,012.37/x
  3. Step 3: Cross multiply
    919,428x = 1,268,822.31 × 506,012.37
  4. Step 4: Simplify right side
    919,428x = 642,039,784,191.98
  5. Step 5: Solve for x
    x = 642,039,784,191.98/919,428
  6. Step 6: Final answer
    x = 698,303.49

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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.