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Finding the Fourth Proportional to 562,946.70, 776,673.63 and 321,055.38

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Solution

The fourth proportional to 562,946.70, 776,673.63 and 321,055.38 is: 442,946.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,946.70 : 776,673.63 = 321,055.38 : x
  2. Step 2: Convert to fraction form
    562,946.70/776,673.63 = 321,055.38/x
  3. Step 3: Cross multiply
    562,946.70x = 776,673.63 × 321,055.38
  4. Step 4: Simplify right side
    562,946.70x = 249,355,247,415.63
  5. Step 5: Solve for x
    x = 249,355,247,415.63/562,946.70
  6. Step 6: Final answer
    x = 442,946.46

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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.