Home / 830,307.84-1,145,837.52-490,807.68

Finding the Fourth Proportional to 830,307.84, 1,145,837.52 and 490,807.68

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Solution

The fourth proportional to 830,307.84, 1,145,837.52 and 490,807.68 is: 677,322.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,307.84 : 1,145,837.52 = 490,807.68 : x
  2. Step 2: Convert to fraction form
    830,307.84/1,145,837.52 = 490,807.68/x
  3. Step 3: Cross multiply
    830,307.84x = 1,145,837.52 × 490,807.68
  4. Step 4: Simplify right side
    830,307.84x = 562,385,854,848.15
  5. Step 5: Solve for x
    x = 562,385,854,848.15/830,307.84
  6. Step 6: Final answer
    x = 677,322.11

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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.