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Finding the Fourth Proportional to 700,947, 967,307.72 and 378,657.09

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Solution

The fourth proportional to 700,947, 967,307.72 and 378,657.09 is: 522,547.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,947 : 967,307.72 = 378,657.09 : x
  2. Step 2: Convert to fraction form
    700,947/967,307.72 = 378,657.09/x
  3. Step 3: Cross multiply
    700,947x = 967,307.72 × 378,657.09
  4. Step 4: Simplify right side
    700,947x = 366,277,926,389.74
  5. Step 5: Solve for x
    x = 366,277,926,389.74/700,947
  6. Step 6: Final answer
    x = 522,547.25

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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.