Home / 381,240,372,260.57-526,168,911,332.67-289,638,186,901.57

Finding the Fourth Proportional to 381,240,372,260.57, 526,168,911,332.67 and 289,638,186,901.57

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Solution

The fourth proportional to 381,240,372,260.57, 526,168,911,332.67 and 289,638,186,901.57 is: 399,744,152,432.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,240,372,260.57 : 526,168,911,332.67 = 289,638,186,901.57 : x
  2. Step 2: Convert to fraction form
    381,240,372,260.57/526,168,911,332.67 = 289,638,186,901.57/x
  3. Step 3: Cross multiply
    381,240,372,260.57x = 526,168,911,332.67 × 289,638,186,901.57
  4. Step 4: Simplify right side
    381,240,372,260.57x = 152,398,609,482,367,497,142,272
  5. Step 5: Solve for x
    x = 152,398,609,482,367,497,142,272/381,240,372,260.57
  6. Step 6: Final answer
    x = 399,744,152,432.54

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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.