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Finding the Fourth Proportional to 720,520.68, 993,802.86 and 505,708.68

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Solution

The fourth proportional to 720,520.68, 993,802.86 and 505,708.68 is: 697,516.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,520.68 : 993,802.86 = 505,708.68 : x
  2. Step 2: Convert to fraction form
    720,520.68/993,802.86 = 505,708.68/x
  3. Step 3: Cross multiply
    720,520.68x = 993,802.86 × 505,708.68
  4. Step 4: Simplify right side
    720,520.68x = 502,574,732,510.83
  5. Step 5: Solve for x
    x = 502,574,732,510.83/720,520.68
  6. Step 6: Final answer
    x = 697,516.04

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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.