Home / 830,417.86-1,145,737.80-540,456.30

Finding the Fourth Proportional to 830,417.86, 1,145,737.80 and 540,456.30

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Solution

The fourth proportional to 830,417.86, 1,145,737.80 and 540,456.30 is: 745,674.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,417.86 : 1,145,737.80 = 540,456.30 : x
  2. Step 2: Convert to fraction form
    830,417.86/1,145,737.80 = 540,456.30/x
  3. Step 3: Cross multiply
    830,417.86x = 1,145,737.80 × 540,456.30
  4. Step 4: Simplify right side
    830,417.86x = 619,221,212,158.14
  5. Step 5: Solve for x
    x = 619,221,212,158.14/830,417.86
  6. Step 6: Final answer
    x = 745,674.25

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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.