Home / 921,859,145.53-1,272,088,715.98-519,950,746.45

Finding the Fourth Proportional to 921,859,145.53, 1,272,088,715.98 and 519,950,746.45

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Solution

The fourth proportional to 921,859,145.53, 1,272,088,715.98 and 519,950,746.45 is: 717,488,653.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,859,145.53 : 1,272,088,715.98 = 519,950,746.45 : x
  2. Step 2: Convert to fraction form
    921,859,145.53/1,272,088,715.98 = 519,950,746.45/x
  3. Step 3: Cross multiply
    921,859,145.53x = 1,272,088,715.98 × 519,950,746.45
  4. Step 4: Simplify right side
    921,859,145.53x = 661,423,477,424,423,040
  5. Step 5: Solve for x
    x = 661,423,477,424,423,040/921,859,145.53
  6. Step 6: Final answer
    x = 717,488,653.91

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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.