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Finding the Fourth Proportional to 562,411.67, 776,128.16 and 307,762.88

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Solution

The fourth proportional to 562,411.67, 776,128.16 and 307,762.88 is: 424,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,411.67 : 776,128.16 = 307,762.88 : x
  2. Step 2: Convert to fraction form
    562,411.67/776,128.16 = 307,762.88/x
  3. Step 3: Cross multiply
    562,411.67x = 776,128.16 × 307,762.88
  4. Step 4: Simplify right side
    562,411.67x = 238,863,434,659.47
  5. Step 5: Solve for x
    x = 238,863,434,659.47/562,411.67
  6. Step 6: Final answer
    x = 424,712.80

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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.