Home / 722,779.16-997,434.26-400,510.12

Finding the Fourth Proportional to 722,779.16, 997,434.26 and 400,510.12

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Solution

The fourth proportional to 722,779.16, 997,434.26 and 400,510.12 is: 552,703.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,779.16 : 997,434.26 = 400,510.12 : x
  2. Step 2: Convert to fraction form
    722,779.16/997,434.26 = 400,510.12/x
  3. Step 3: Cross multiply
    722,779.16x = 997,434.26 × 400,510.12
  4. Step 4: Simplify right side
    722,779.16x = 399,482,515,164.71
  5. Step 5: Solve for x
    x = 399,482,515,164.71/722,779.16
  6. Step 6: Final answer
    x = 552,703.42

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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.