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Finding the Fourth Proportional to 666,927,109.98, 920,364,894.95 and 369,574,317.87

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Solution

The fourth proportional to 666,927,109.98, 920,364,894.95 and 369,574,317.87 is: 510,015,597.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,927,109.98 : 920,364,894.95 = 369,574,317.87 : x
  2. Step 2: Convert to fraction form
    666,927,109.98/920,364,894.95 = 369,574,317.87/x
  3. Step 3: Cross multiply
    666,927,109.98x = 920,364,894.95 × 369,574,317.87
  4. Step 4: Simplify right side
    666,927,109.98x = 340,143,228,242,640,448
  5. Step 5: Solve for x
    x = 340,143,228,242,640,448/666,927,109.98
  6. Step 6: Final answer
    x = 510,015,597.14

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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.