Home / 806,208,054.60-1,209,312,081.90-644,964,918.60

Finding the Fourth Proportional to 806,208,054.60, 1,209,312,081.90 and 644,964,918.60

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Solution

The fourth proportional to 806,208,054.60, 1,209,312,081.90 and 644,964,918.60 is: 967,447,377.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,208,054.60 : 1,209,312,081.90 = 644,964,918.60 : x
  2. Step 2: Convert to fraction form
    806,208,054.60/1,209,312,081.90 = 644,964,918.60/x
  3. Step 3: Cross multiply
    806,208,054.60x = 1,209,312,081.90 × 644,964,918.60
  4. Step 4: Simplify right side
    806,208,054.60x = 779,963,868,464,630,144
  5. Step 5: Solve for x
    x = 779,963,868,464,630,144/806,208,054.60
  6. Step 6: Final answer
    x = 967,447,377.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.