Home / 920,545.51-1,270,342.56-512,638.42

Finding the Fourth Proportional to 920,545.51, 1,270,342.56 and 512,638.42

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Solution

The fourth proportional to 920,545.51, 1,270,342.56 and 512,638.42 is: 707,435.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,545.51 : 1,270,342.56 = 512,638.42 : x
  2. Step 2: Convert to fraction form
    920,545.51/1,270,342.56 = 512,638.42/x
  3. Step 3: Cross multiply
    920,545.51x = 1,270,342.56 × 512,638.42
  4. Step 4: Simplify right side
    920,545.51x = 651,226,402,817.16
  5. Step 5: Solve for x
    x = 651,226,402,817.16/920,545.51
  6. Step 6: Final answer
    x = 707,435.31

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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.